import Vue from "vue";
import VueRouter from "vue-router";
import Login from "../components/Login.vue";
import Home from "../components/Home.vue";
import Welcome from "../components/Welcome.vue";
import Users from "../components/user/Users.vue";
import Rights from "../components/power/Rights.vue";
import Roles from "../components/power/Roles.vue";
import Cate from "../components/goods/Cate.vue";
import Params from "../components/goods/Params.vue";
import List from "../components/goods/List.vue";
import Add from "../components/goods/Add.vue";
import Order from "../components/order/Order.vue";
import Report from "../components/report/Report.vue";


Vue.use(VueRouter);

const routes = [
    { path: "/", redirect: "/login" },
    { path: "/login", component: Login },
    {
        path: "/home",
        component: Home,
        redirect: "/welcome",
        children: [
            { path: "/welcome", component: Welcome },
            { path: "/users", component: Users },
            { path: "/rights", component: Rights },
            { path: "/roles", component: Roles },
            { path: "/categories", component: Cate },
            { path: "/params", component: Params },
            { path: "/goods", component: List },
            { path: "/goods/add", component: Add },
            { path: "/orders", component: Order },
            { path: "/reports", component: Report }
        ]
    }
];

const router = new VueRouter({
    routes
});

// 前置守卫
// 只有登陆后，才能访问非login页面
router.beforeEach((to, from, next) => {
    //如果访问的是 login页面， 允许访问
    if (to.path == "/login") return next();
    //如果访问的是 非 login页面
    //1.首先获取 sessionStorage中的token
    //2.如果没有获取到token，意味着没有登录，则跳转到login 重新登录
    const tokenStr = sessionStorage.getItem("token");
    if (!tokenStr) return next("/login");
    //3. 如果获取到token，则直接跳转到要访问页面
    next();
});

export default router;